2023-05-07 18:58:40 +02:00
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---
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title: 'Documentation'
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introduction: >
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Sass is a stylesheet language that’s compiled to CSS. It allows you to use
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[variables](/documentation/variables), [nested
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rules](/documentation/style-rules#nesting),
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[mixins](/documentation/at-rules/mixin),
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[functions](/documentation/modules), and more, all with a fully
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CSS-compatible syntax. Sass helps keep large stylesheets well-organized and
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makes it easy to share design within and across projects.
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---
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- If you're looking for an introduction to Sass, check out [the
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tutorial](/guide).
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- If you want to look up a built-in Sass function, look no further than [the
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built-in module reference](/documentation/modules).
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- If you're calling Sass from JavaScript, you may want the [JS API
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documentation][js].
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- Or the [Dart API documentation][dart] if you're calling it from Dart.
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- Otherwise, use the table of contents for the language reference!
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[js]: https://github.com/sass/node-sass#usage
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[dart]: https://pub.dartlang.org/documentation/sass/latest/sass/sass-library.html
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## Older Versions
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This documentation is written for the most recent version of the Sass language.
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2023-05-31 18:31:53 +02:00
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If you're using [Dart Sass] {{ releases['dart-sass'].version }}, you'll have
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access to all the features described here. But if you're using an older version
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of Dart Sass or a deprecated Sass implementation like [LibSass] or [Ruby Sass],
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there may be some behavioral differences.
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[Dart Sass]: /dart-sass
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[LibSass]: /libsass
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[Ruby Sass]: /ruby-sass
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Anywhere behavior differs between versions or implementations, the documentation
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includes a compatibility indicator like this:
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2023-06-01 17:43:54 +02:00
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{% compatibility 'dart: true', 'libsass: 3.6.0', 'ruby: false', 'feature: Feature Name' %}{% endcompatibility %}
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Implementations with a "✓" fully support the feature in question, and
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implementations with a "✗" don't support it all. Implementations with a version
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number started supporting the feature in question at that version.
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Implementations can also be marked as "partial":
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2023-06-01 17:43:54 +02:00
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{% compatibility 'dart: true', 'libsass: partial', 'ruby: false' %}
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Additional details go here.
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2023-05-23 18:24:23 +02:00
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{% endcompatibility %}
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This indicates that the implementation only supports some aspects of the
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feature. These compatibility indicators (and many others) have a "▶" button,
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which can be clicked to show more details about exactly how the implementations
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differ and which versions support which aspects of the feature in question.
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